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HOMESERVICE MANUALSPONTIAC2006G6 GTP, 2D COUPE, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 5 (ENGINE MECHANICAL - 3.5L)REPAIR INSTRUCTIONSON-VEHICLE REPAIR INSTRUCTIONSENGINE REPLACEMENTINSTALLATION PROCEDURE
2006 Pontiac G6 GTP, 2D Coupe, Standard

Installation Procedure

2006 Pontiac G6 GTP, 2D Coupe, StandardSECTION Installation Procedure
WARNING: This page is about a different variant/trim than selected.
    Fig 1: View of Transaxle To Engine Mounting
    GM160965Courtesy of GENERAL MOTORS CORP.
  1. Remove the engine from the engine stand.
  2. Install the flywheel. Refer to Engine Flywheel Replacement .
  3. Install the engine to the vehicle.
    4. NOTE: Refer to Fastener Notice in Cautions and Notices.
  4. Install the upper transaxle-to-engine bolts (3, 4, 5) and the stud (2).

    Tighten:  Tighten the bolts (3, 4, 5) and the stud (2) to 75 N.m (55 lb ft).

  5. Remove the engine lifting device.
  6. Install the radiator inlet hose to the engine. Refer to Radiator Hose Replacement - Inlet (LE5)
  7. Install the fuel lines to the fuel rail. Refer to Fuel Rail Assembly Replacement in Engine Controls - 3.5L.
  8. Install the brake booster vacuum hose to the upper intake manifold.
  9. Install the vacuum hoses to the upper intake manifold.
  10. Install the heater inlet and outlet hoses to the engine.
  11. Raise the vehicle and remove the transaxle support.
  12. Install the radiator outlet hose to the engine. Refer to Radiator Hose Replacement - Outlet (LE5)
  13. Install the lower transaxle-to-engine bolt (6) and the stud (1).

    Tighten:  Tighten the bolt (6) and the stud (1) to 75 N.m (55 lb ft).

    Fig 2: Identifying Transmission To Engine Brace Bolts
    GM1725337Courtesy of GENERAL MOTORS CORP.
  14. Position the transaxle to oil pan brace and install the bolts.

    Tighten:  Tighten the bolts to 50 Nm (37 lb ft).

    Fig 3: Transaxle Brace Bolts
    GM1736169Courtesy of GENERAL MOTORS CORP.
  15. Position the transaxle brace (7) to the transaxle and install the bolts (5 and 6) until snug.
  16. Install the engine wiring harness clip to the rear of the transaxle brace.
    Fig 4: View Of Engine Mount Bracket Bolts & Bracket
    GM1229785Courtesy of GENERAL MOTORS CORP.
  17. Position the engine mount bracket to the engine and install the bolts until snug.
  18. Tighten the engine mount bracket bolts and transaxle brace bolts.

    Tighten 

    • Tighten the engine mount bracket upper bolt to 90 Nm (66 lb ft).
    • Tighten the engine mount bracket lower bolts to 50 Nm (37 lb ft).
    • Tighten the transaxle brace bolts to 72 Nm (53 lb ft).
  19. Install the torque converter bolts.
  20. Install the A/C compressor. Refer to Compressor Replacement (LE5)
  21. Install the starter motor. Refer to Starter Motor Replacement (3.5L)
  22. Install the torque converter covers.
    23. Fig 5: Identifying Engine Mount Lower Nuts
    GM96002Courtesy of GENERAL MOTORS CORP.
  23. Install the engine mount lower nuts.

    Tighten:  Tighten the nuts to 43 N.m (32 lb ft).

  24. Install the engine wiring harness grounds to the transaxle.
  25. Install the engine wiring harness ground nut to the transaxle stud.

    Tighten:  Tighten the nut to 35 N.m (26 lb ft).

  26. Install the catalytic converters. Refer to Catalytic Converter Replacement - Left (3.5L) or and Catalytic Converter Replacement - Right (3.5L) .
  27. Lower the vehicle.
  28. Connect the following electrical connectors:
    • The body wiring harness-to-engine harness
    • The ignition coil
    • The electronic throttle control
    • The EVAP canister purge solenoid
    • The EGR valve
    • The MAP sensor
    • The HO2S
    • The CKP sensor
    • The CMP sensor
    • The KS
  29. Install the drive belt. Refer to Drive Belt Replacement .
  30. Install the engine mount strut. Refer to Engine Mount Strut Replacement .
  31. Install the hood. Refer to Hood Replacement in Body Front End.
  32. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.5L.
  33. Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
  34. Fill the crankcase with engine oil. Refer to Engine Oil and Oil Filter Replacement .
  35. Fill cooling system. Refer to Draining and Filling Cooling System in Engine Cooling.
  36. Perform a CKP system variation learn procedure. Refer to CKP System Variation Learn Procedure in Engine Controls - 3.5L.
  37. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement .
  38. Inspect for leaks.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.